Numerical model for healthy and injured ankle ligaments
- 195 Downloads
The aim of this work is to provide a computational tool for the investigation of ankle mechanics under different loading conditions. The attention is focused on the biomechanical role of ankle ligaments that are fundamental for joints stability. A finite element model of the human foot is developed starting from Computed Tomography and Magnetic Resonance Imaging, using particular attention to the definition of ankle ligaments. A refined fiber-reinforced visco-hyperelastic constitutive model is assumed to characterize the mechanical response of ligaments. Numerical analyses that interpret anterior drawer and the talar tilt tests reported in literature are performed. The numerical results are in agreement with the range of values obtained by experimental tests confirming the accuracy of the procedure adopted. The increase of the ankle range of motion after some ligaments rupture is also evaluated, leading to the capability of the numerical models to interpret the damage conditions. The developed computational model provides a tool for the investigation of foot and ankle functionality in terms of stress–strain of the tissues and in terms of ankle motion, considering different types of damage to ankle ligaments.
KeywordsFoot mechanics Ankle ligaments Constitutive model Numerical model
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflicts of interest.
This article does not contain any studies with human participants or animals performed by any of the authors.
- 2.Scott AL (2002) Assessment of the injured ankle in the athlete. J Athl Train 37(4):406–412Google Scholar
- 16.Vassenon T, Gao Y, Phisitkul P (2012) Comparison of two manual tests for ankle laxity due to rupture of the lateral ankle ligaments. Iowa Orthop J 32:9–16Google Scholar
- 18.Disanto TJ, Swanik B, Swanik KA, Straub SJ, Needle AR (2011) Concurrent validity of the anterior drawer test and an arthrometer in evaluating ankle laxity. Athl Train Sports Healthy Care 3:15–20Google Scholar
- 19.Pearsall AW, Kovaleski JE, Heitman RJ, Gurchiek LR, Hollis JM (2006) The relationships between instrumented measurements of ankle and knee ligamentous laxity and generalized joint laxity. J Sports Med Phys Fit 46(1):104–110Google Scholar